Section 3: Indicator 2 (Questions 10-18)
Questions in this section are for quantifying Indicator 2, and will inform the section on Indicator 1 by stipulating the number of populations you will be asked to complete with respect to population name and size.
Q10 is asking about the number of known extinct populations within the country! In other words, the total number of known historic populations in the country! Ideally, the assessor will find details of extinct populations in the reports, databases, or experts s/he is consulting. This may come in the form of a list or map(s). An integer count (e.g., 1, 2) can therefore be reported. If the number of extinct populations isUnknown , please type -999 .
Given that we are assessing human-induced changes in species’ genetic diversity and structure, 50-200 years ago can be used as the historic/prior baseline for which to compare population numbers. This timeline reflects the industrial era and rapid habitat change in many countries. However, it is acknowledged that baselines might vary by country depending on human impact/ growth and even depending on species type (e.g. earlier hunting of large mammals). As such, it is the choice of the in-country assessor as to what is appropriate, and is somewhat dependent on the data available in records. Please record the date of the baseline/historic structure that you are referring to when counting populations (Q11). This could allow for interesting temporal comparisons during downstream analyses (e.g., ‘pre industrial’ [1700s], ‘great acceleration’ [1950s], initiation of the CBD [1993], the start of this decade [2020]).